Examples with LoadBalancerStrategyTestRunner com.linkedin.d2.balancer.strategies.framework.LoadBalancerStrategyTestRunner used on opensource projects

Example 21 with LoadBalancerStrategyTestRunner

use of com.linkedin.d2.balancer.strategies.framework.LoadBalancerStrategyTestRunner in project rest.li by linkedin.

the class TestLoadBalancerStrategy method testGrowingQps.

@Test(dataProvider = "strategy")
public void testGrowingQps(loadBalancerStrategyType type) {
    Map<String, String> degraderPropertiesWithMinCallCount = new HashMap<>();
    D2RelativeStrategyProperties relativePropertiesWithMinCallCount = new D2RelativeStrategyProperties();
    // Set minCallCount to be 100
    degraderPropertiesWithMinCallCount.put(PropertyKeys.DEGRADER_MIN_CALL_COUNT, "100");
    relativePropertiesWithMinCallCount.setMinCallCount(100);
    LoadBalancerStrategyTestRunnerBuilder builder = new LoadBalancerStrategyTestRunnerBuilder(type, DEFAULT_SERVICE_NAME, 5).setDynamicRequestCount((intervalIndex) -> 10 + 50 * intervalIndex).setNumIntervals(50).setConstantLatency(Arrays.asList(UNHEALTHY_HOST_CONSTANT_LATENCY, HEALTHY_HOST_CONSTANT_LATENCY, HEALTHY_HOST_CONSTANT_LATENCY, HEALTHY_HOST_CONSTANT_LATENCY, HEALTHY_HOST_CONSTANT_LATENCY));
    LoadBalancerStrategyTestRunner testRunner = type == loadBalancerStrategyType.DEGRADER ? builder.setDegraderStrategies(new HashMap<>(), degraderPropertiesWithMinCallCount).build() : builder.setRelativeLoadBalancerStrategies(relativePropertiesWithMinCallCount).build();
    testRunner.runWait();
    List<Integer> pointHistory = testRunner.getPointHistory().get(testRunner.getUri(0));
    int lowestPoints = getLowestPoints(pointHistory);
    assertEquals(pointHistory.get(3).intValue(), HEALTHY_POINTS, "The unhealthy host still has 100 points on 4th iteration because QPS was small");
    assertTrue(lowestPoints <= FULLY_DROPPED_POINTS, "The points will eventually drop");
}

Example 22 with LoadBalancerStrategyTestRunner

use of com.linkedin.d2.balancer.strategies.framework.LoadBalancerStrategyTestRunner in project rest.li by linkedin.

the class TestLoadBalancerStrategy method testQuarantineRecovery.

@Test(dataProvider = "strategy")
public void testQuarantineRecovery(loadBalancerStrategyType type) {
    Map<String, Object> strategyPropertiesWithQuarantineEnabled = new HashMap<>();
    D2RelativeStrategyProperties relativePropertiesWithQuarantineEnabled = new D2RelativeStrategyProperties();
    D2QuarantineProperties quarantineProperties = new D2QuarantineProperties().setQuarantineMaxPercent(DEFAULT_QUARANTINE_PERCENTAGE);
    strategyPropertiesWithQuarantineEnabled.put(PropertyKeys.HTTP_LB_QUARANTINE_MAX_PERCENT, String.valueOf(DEFAULT_QUARANTINE_PERCENTAGE));
    relativePropertiesWithQuarantineEnabled.setQuarantineProperties(quarantineProperties);
    LoadBalancerStrategyTestRunnerBuilder builder = new LoadBalancerStrategyTestRunnerBuilder(type, DEFAULT_SERVICE_NAME, 5).setConstantRequestCount(1000).setNumIntervals(40).setDynamicLatency(Arrays.asList(HOST_RECOVERING_TO_HEALTHY_LATENCY, HEALTHY_HOST_LATENCY_CORRELATION, HEALTHY_HOST_LATENCY_CORRELATION, HEALTHY_HOST_LATENCY_CORRELATION, HEALTHY_HOST_LATENCY_CORRELATION));
    LoadBalancerStrategyTestRunner testRunner = type == loadBalancerStrategyType.DEGRADER ? builder.setDegraderStrategies(strategyPropertiesWithQuarantineEnabled, new HashMap<>()).build() : builder.setRelativeLoadBalancerStrategies(relativePropertiesWithQuarantineEnabled).build();
    testRunner.runWait();
    List<Integer> pointHistory = testRunner.getPointHistory().get(testRunner.getUri(0));
    assertEquals(getLowestPoints(pointHistory), QUARANTINED_POINTS);
    assertEquals(pointHistory.get(39).intValue(), HEALTHY_POINTS);
}

Example 23 with LoadBalancerStrategyTestRunner

use of com.linkedin.d2.balancer.strategies.framework.LoadBalancerStrategyTestRunner in project rest.li by linkedin.

the class TestLoadBalancerStrategy method testOneHostBelongToMultiplePartitions.

@Test
public void testOneHostBelongToMultiplePartitions() {
    Map<Integer, PartitionData> partitionDataMapForBothPartitions = new HashMap<>();
    partitionDataMapForBothPartitions.put(0, new PartitionData(DEFAULT_WEIGHT));
    partitionDataMapForBothPartitions.put(1, new PartitionData(DEFAULT_WEIGHT));
    Map<Integer, PartitionData> partitionDataMapPartition0 = new HashMap<>();
    partitionDataMapPartition0.put(0, new PartitionData(DEFAULT_WEIGHT));
    Map<Integer, PartitionData> partitionDataMapPartition1 = new HashMap<>();
    partitionDataMapPartition1.put(1, new PartitionData(DEFAULT_WEIGHT));
    LoadBalancerStrategyTestRunner testRunner = new LoadBalancerStrategyTestRunnerBuilder(loadBalancerStrategyType.RELATIVE, DEFAULT_SERVICE_NAME, DEFAULT_NUM_HOSTS).setConstantRequestCount(DEFAULT_REQUESTS_PER_INTERVAL).addPartitionUriMap(0, Arrays.asList(0, 1, 2)).addPartitionUriMap(1, Arrays.asList(0, 3, 4)).addPartitionDataMap(0, partitionDataMapForBothPartitions).addPartitionDataMap(1, partitionDataMapPartition0).addPartitionDataMap(2, partitionDataMapPartition0).addPartitionDataMap(3, partitionDataMapPartition1).addPartitionDataMap(4, partitionDataMapPartition1).setNumIntervals(3).setConstantLatency(Arrays.asList(UNHEALTHY_HOST_CONSTANT_LATENCY, HEALTHY_HOST_CONSTANT_LATENCY, HEALTHY_HOST_CONSTANT_LATENCY, UNHEALTHY_HOST_CONSTANT_LATENCY, UNHEALTHY_HOST_CONSTANT_LATENCY)).build();
    // Send traffic to partition 0 and 1
    testRunner.runWait(Arrays.asList(0, 1));
    Map<URI, Integer> pointsMapPartition0 = testRunner.getPoints(0);
    Map<URI, Integer> pointsMapPartition1 = testRunner.getPoints(1);
    assertEquals(pointsMapPartition0.get(testRunner.getUri(0)).intValue(), (int) (HEALTHY_POINTS - RelativeLoadBalancerStrategyFactory.DEFAULT_DOWN_STEP * HEALTHY_POINTS * 2));
    assertEquals(pointsMapPartition1.get(testRunner.getUri(0)).intValue(), HEALTHY_POINTS);
}

Example 24 with LoadBalancerStrategyTestRunner

use of com.linkedin.d2.balancer.strategies.framework.LoadBalancerStrategyTestRunner in project rest.li by linkedin.

the class TestLoadBalancerStrategy method testSlowStart.

@Test(dataProvider = "strategy", retryAnalyzer = SingleRetry.class)
public void testSlowStart(loadBalancerStrategyType type) {
    Map<String, String> degraderPropertiesWithSlowStart = new HashMap<>();
    D2RelativeStrategyProperties relativePropertiesWithSlowStart = new D2RelativeStrategyProperties();
    degraderPropertiesWithSlowStart.put(PropertyKeys.DEGRADER_SLOW_START_THRESHOLD, "0.2");
    relativePropertiesWithSlowStart.setSlowStartThreshold(0.2);
    LoadBalancerStrategyTestRunnerBuilder builder = new LoadBalancerStrategyTestRunnerBuilder(type, DEFAULT_SERVICE_NAME, 5).setConstantRequestCount(60).setNumIntervals(50).setDegraderStrategies(new HashMap<>(), degraderPropertiesWithSlowStart).setDynamicLatency(Arrays.asList(HOST_RECOVERING_TO_HEALTHY_LATENCY, HEALTHY_HOST_LATENCY_CORRELATION, HEALTHY_HOST_LATENCY_CORRELATION, HEALTHY_HOST_LATENCY_CORRELATION, HEALTHY_HOST_LATENCY_CORRELATION));
    LoadBalancerStrategyTestRunner testRunner = type == loadBalancerStrategyType.DEGRADER ? builder.setDegraderStrategies(new HashMap<>(), degraderPropertiesWithSlowStart).build() : builder.setRelativeLoadBalancerStrategies(relativePropertiesWithSlowStart).build();
    testRunner.runWait();
    List<Integer> pointHistory = testRunner.getPointHistory().get(testRunner.getUri(0));
    assertTrue(hasPointsInHistory(pointHistory, Arrays.asList(2, 4, 8, 16)), "Slow start should double the health score when it is below threshold");
}

Example 25 with LoadBalancerStrategyTestRunner

use of com.linkedin.d2.balancer.strategies.framework.LoadBalancerStrategyTestRunner in project rest.li by linkedin.

the class TestLoadBalancerStrategy method testMostHostWithHighLatency.

@Test
public void testMostHostWithHighLatency() {
    LoadBalancerStrategyTestRunner testRunner = new LoadBalancerStrategyTestRunnerBuilder(loadBalancerStrategyType.RELATIVE, DEFAULT_SERVICE_NAME, DEFAULT_NUM_HOSTS).setConstantRequestCount(DEFAULT_REQUESTS_PER_INTERVAL).setNumIntervals(6).setConstantLatency(Arrays.asList(UNHEALTHY_HOST_CONSTANT_LATENCY, UNHEALTHY_HOST_CONSTANT_LATENCY, UNHEALTHY_HOST_CONSTANT_LATENCY, UNHEALTHY_HOST_CONSTANT_LATENCY, HEALTHY_HOST_CONSTANT_LATENCY)).build();
    testRunner.runWait();
    Map<URI, Integer> pointsMap = testRunner.getPoints();
    assertEquals(pointsMap.get(testRunner.getUri(0)).intValue(), HEALTHY_POINTS);
    assertEquals(pointsMap.get(testRunner.getUri(1)).intValue(), HEALTHY_POINTS);
    assertEquals(pointsMap.get(testRunner.getUri(2)).intValue(), HEALTHY_POINTS);
    assertEquals(pointsMap.get(testRunner.getUri(3)).intValue(), HEALTHY_POINTS);
    assertEquals(pointsMap.get(testRunner.getUri(4)).intValue(), HEALTHY_POINTS);
}